• List of C Programs
• List of All Programs

Write C Program to Print All Prime Numbers Between n and m using While loop

//Write a program to print all prime numbers between n and m using while loop

#include <stdio.h>
#include <stdbool.h>

bool isPrime(int n)
{
	if(n == 1 || n ==0)
		return false;

	int i = 2;
	while(i < n)
	{
		if(n % i == 0)
		{
			return false;
		}
		i++;
	}

	return true;
}

int main()
{
	int n,m;
	printf("Enter n :--> ");
	scanf("%d", &n);

	printf("Enter m :--> ");
	scanf("%d", &m);

	printf("Prime numbers between %d to 5d :--> ", n, m);

	int i = n, j = m;
	while(i < j)
	{
		if(isPrime(i))
		{
			printf("%d ",i);
		}
		i++;
	}

	return 0;
}

Output:

Enter n :--> 22
Enter m :--> 56

Prime numbers between 22 to 54 :--> 23 29 31 37 41 43 47 53